As much as you and I both love pop culture, I think it's fair to say that there aren't many entertainers who have literally changed our lives. And Kristen Wiig has. Go ahead, imagine the past few years of your TV and movie consumption without her. What a bleak world! Let's never go there again. Our dear Kristen turns 40 today, and we can't wait to see what she does with the next 40 years. In the meantime, let's revisit her best lines, looks, and goofy dances in the form that was seemingly invented for her brand of comedy: GIFs.